Otocinclus Catfish

Otocinclus Catfish (Otocinclus sp.)
The Otocinclus Catfish, often called “Otos” or “Dwarf Suckers,” is a small, peaceful freshwater catfish native to rivers across South America. Known for its slender body and algae-eating habits, this species is excellent for keeping tanks clean while adding gentle activity to the lower levels of community aquariums.

Quick Facts:

• Origin: South America
• Family: Loricariidae
• Adult Size: Up to 5 cm
• Lifespan: 3–5 years
• Temperament: Peaceful, social, schooling
• School Size: Minimum group of 6+
• Tank Level: Bottom-dweller
• Diet: Herbivore/Omnivore – algae wafers, blanched vegetables, biofilm, occasional sinking pellets
• Water Temperature: 22–26 °C
• pH Range: 6.5–7.5
• Water Hardness: Soft to moderately hard
• Tank Setup: Smooth substrate, live plants, gentle water flow, hiding spots
• Compatibility: Excellent for peaceful community aquariums
• Care Level: Beginner